Fastening-pulling machine



April 1933- F. L. M KENZIE 1,905,297

FASTENING-PULLING MAGHLNE Filed Aug. 25, 1930 2 Sheets-Sheet 1 April 25, 1933.

Fig 5.

F. L. MacKENZlE FASTENINGPULLING MACHINE Filed Aug. 26, 1930 2 SheetsSheet 2 Patented Apr. 25, 1933 UNlTED'fSTA TES ersist OFFICE;

I FRED L. MACKENZIE, on BEVERLY, MAssAcHUsE'r'rs, ASSIGNOR T UNITED SHOE MACHINERY CORPORATION, PATERSON, NEW JERSEY, A

JERSEY COEPGRATION OF-NEW FASTENING-P'ULLING MACHiNE 7 Application filed August 26, 1930., Serial No. 477,934.

This invention relates to machines'for drawing fastenings fromvarious articles, as those for pulling the temporary securing tacks from insoles of shoes. The present case constitutes a continuationof a copendsirable to vary considerably the depth to which the tool acts and still to limit the extent to which said tool enters the surface of the work into which the tacks are driven. To this end and as illustrated, the invention provides in a machine of the type referred to a pulling member or tool and gage members cooperating with the tool. Preferably the gage members are adjustable relatively to the tool and to each other so that one of the gage members can be positioned to act as a guide for the work and also to serve as a holddown or abutment resisting the pulling acfrom the point of engagement of the tool with the work. Upon the gage member having the greatest projection the work may be rocked laterally to increase or diminish the bite of the tool while the other acts as a stop determining the maximum depth of engagement. Either or both of these gages may be adjustable to modify their effects.v

Other objects and features of the inven tion will be apparent from the following detailed description when taken in connection with the accompanying drawings and.

will be pointed out in the claims.

preventing injury to the work In the drawings, Fig. l is a side elevation of my improved machine particularly arranged for pulling insole tacks; Fig. 21 is a partial vertical-section through the driving shaft with which is associated an electric motor, a v Fig. 3 illustrates in front elevation the tack-pulling tool and gage members "of Fig.1; I I

Fig.- 4: is a side elevation of a modified construction; V

Fig. 5 is a plan view, partly in section, of the machine illustrated in Fig. 4; and

Fig. 6 illustrates in front elevation the tack-pulling tool and gage members of Fig. 4. The machine illustrated in Figs. 1, 2 and-3 comprisesja base portion or. frame 10 in'the form of a column, the upper extremity only being illustrated in the drawings. :Upon the base portion 10 issecured a carrier portion, consisting of an upstanding bracket 12 offset to one side of the vertical axis of the column.

' Atthe upper end of this bracket is algener ally cylindrical head lh'aving its axis located horizontally, andwith a bore 16 extend ing. along this axis and arranged to receive a journal bearing. Attached to the side of the head 14 over the column is a hollow frame arm 18 extending slightly upwardand then forward clear of the column. Within this head is mounted an operatinglever orftac k puller bar 20 hung near its center for oscillation upon a link 22 pivoted upon lugs 24 depending from the upper side of the'interior of the arm. At its extremity outside the arm, the lever is provided with clamping means consisting'of a divided socket 26 to receive the shank ofa tack-pulling tool, such as tool 28 (Figs. 1 and 3). The outerend of the tool 28. is substantially rectangular in cross-section but is tapered at its end portion the upper surface of which is provided with agouge 29 terminating in a sharp edge 80. Screws 31, extending horizontally through the lever, serve to draw the opposite sides of the socket- 26 together to clamp the tool 28 in place. v

The inner end of the arm 20 carries a strap 32 surrounding an eccentric 34. As particularly illustrated 1n Fig. 2, the eccentric is mounted upon a tubular spindle or' Attached to the outer face of the head 14,

opposite the arm 18, is the casing of an electric motor 44. The shaft 46 of this motor is axially alined with the spindle 36, and has an end portion 48 extending into the spindle. The shaft 46 is keyed to the spindle'at 50, and is held against longitudinal movement in the direction of the arm by a flange 52, while-a screw 54, threaded into the shaft and havinga washer beneath its head abutting against the outer extremity of the spindle, draws the flange into contact with the spindle, holding these elements firmly connected. The thus-furnished bearing common to the eccentric and motor shafts gives a simple and compact arrangement, insuring effective coupling and perfect alinement. Lateral play of the motor armature in aXial directions in centering itself .in its magnetic field is permitted by longitudinal movement of the eccentric spindle 36, there being space to permit this between the adjacent ends of the bushings 38. The lever 20 is prevented from sharing in this movement by cheek pieces '56 formed upon the interior of the arm 18, and between which the lever slides. The lower portion of the arm may be formed as an oil chamber, in which the eccentric-dips in its rotation, the counterbalance weight 42 splashing the oil to lubricate the bearings of various of the operating parts. The depth of-oil in the chamber is determinable by a gage 58, while a cock 60 is provided, through which the chamber may be emptied. A flange 62 is shown about the lever 20 just within the outer extremity of the arm, thus furnishing a shield tending to exclude tacks from the arm and tending to prevent the spattering of oil on the work or the flow of oil along the lever 20.

The forward end portion of the arm 18 is provided with an upwardly disposed machined surface 64 to which is secured by bolts 66 a frame extension 68. Adjustably secured to the forward wall of this extension :by a sliding screw connection 70 is an inclined arm 72 having at its lower end a gage roll 74 rotatable about a horizontal axis and With the bottom of its periphery located slightly at one side of the path of movement of the tool 28' and somewhat above the lowest point in the path of movement of the tool. Joined to the arm 72 by a slot-andscrew connection 76 is a gage member 78 situated in close proximity to the opposite side of the tool from the roll 74 and having its lower extremity with which the work contacts at a somewhat greater height than the bottom of the roll.

In pulling insole tacks with the machine organized as above described, the operator may advance the work, such as a shoe 79 (Fig. 3), along the roll 74 in a nearly horizontal position, the rotation of the roll upon its arm permitting the guiding action with but little resistance to movement. The travel of the member 28 under guidance of eccentric 34 and links 22 is preferably in an elliptical path, eflective operation taking place as the tool is directed downwardly and forwardly, during which time its curved edge 30 is forced into the upper surface of the insole beneath the head of the tack, and

deep enough properly to engage the tack,

the work may be tilted up at the right side, as seen in Fig. .3, upon the roll 74 as a rest toward the gage 78. This causes the tool to,

be more deeply projected into the work, and thusmoreeffectively engage the tack. .Destructive effect of the tool upon the insole material is prevented by contact of the work with the gage 78, this being adjusted by its connection 76 as-may be necessary to limit the digging of the tool into the work. Obviously, theoperator may modify this tack engaging action to any degree, between the lightest contact of the tool with the insole, when the side of the work removed from the roll may be horizontal or even inclined downwardly, I and the. maximum engagement, when the insole has been raised into contact with the gage member 7 8.

In the machine illustrated in Figs. 4,5

-96 to which it is pivotally securedat 98, the

links in turn being pivoted at 100 upon lugs 102 depending from the upper portion of the arm 84. The arm 84 is providedwith machined bearing surfaces 104 and 106 engaging side portions of the tack puller bar 92. The bar is forced against the bearing surfaces by bearing plates 108 and 110 which engage portions of the bar upon the opposite side thereof and which are held in position respectively by bolts 112 and 114. The bearing plate 108 is provided with a flange 1 16 heightwise of the frame.

ly in curved work-engaging surfaces 164 and upper and lower surfaces of which slidably engage guides in the form of lugs 118 upon the arm, thereby to prevent play of. the plate heightwise of the bar 92.- Bearingplate 110 is provided with a similar flange 120 for engagement with lugs 122 for a similar purpose. This construction provides means for taking up the play between the tack puller bar and its bearings, thus makingit possible to obtain smooth operation of the bar when in. operation, thereby reducing the vibration of the machine. The forward bearing surface .104 and its corresponding bearing plate 108 are recessed, as indicated by reference characters 124 and 126, for the purpose of receivingpieces of felt 128 which are effective to lubricate theside surfaces of the bar 92, oil being supplied to the felts by an oil cup 130. Oil is supplied to the link pivots 9,8

The flange 116 of bearing plate 108 substantially closes off the forward portion of the arm 84 except for an opening 136 in the flange through which the forward portion of the tack puller bar extends. Near the point where the bar passes through the opening 136 the bar is curved upwardly, as indicated by reference character 138, to clear. the lower portion 140 of the bearing plate 108 and is then curved downwardly, as indicated by referencecharacter 142. Thiscurvature of the tack puller bar 92 tends to prevent tacks from entering into the opening 136 between the bearing surface 104 and the bearing plate 108 through which opening the tack puller bar operates. In this connection it will be noted that the downward curvature of the bar is such that the greater portion of such opening is covered by portions of the bar which extend in a direct line between the tool and the opening.

The forward end of the arm 84 is provided with a depending extension or frame 144 upon the outer surface of which are two lugs 146 between which are mounted two gages 4 148 and 150 adjustably held upon the frame by set-screws 152 which operate in slots 154 in the gages to provide for longitudinal adjustment of each of the gages independently The gage 148 is recessed, as indicated by reference character 156, to provide passage for a tack-pulling tool 158 which is located between the gages and in close proximity to the side walls thereof. The tool 158 which is similar to tool 28 (Fig. 3) is secured to the bar 92 by a split holder 160 and clamping screws 162. As shown, the gages 148 and 150 are tapered at their lower ends and terminate respective- 166. As in the case of gages 72 and 78, one gage (gage 150) is normally adjusted so that its work-engaging surface 166 is raised somewhat above the similar surface 164 of the other gage 140, whereby a shoe, such as other above the plane of presentation of shoe 168., maybe presented to the tack-pulling, tool under the guidance of gage 148 and may be tilted upwardly about the bottom of the gage 148 as an axis in orderto obtain deeper operation of the tool upon the shoe, movement of the shoe being limited by the gage 15 0. z. r The operation of the construction just described is similar to that of the construction illustrated in Figs. 1 and 3 except that the Work is guided by a curved surfacev 164 of the gage 148 instead of by a roll 74.

It is to be noted that some operators may prefer to rock the rear portion of a shoe presented to the tools in an upward direction to pull a deeply embedded tack rather than to tilt the shoe laterally. The constructions above described can be readily adaptedto operate in this manner by adjustingthe gages 72 and 78 or the gages 148 andl50, as the case may be, so that their work-engaging portions lie at the same level or nearly so, in. which case each of the gages will act as. a guide andholddown for the work presented thereto. The gages 148 and 150 are ,es-. pecially well adapted to this and other ad-z justments in viewof the fact that they are mounted for movement relatively to the frame. and tool independently of each other.

Having described vmy invention, what I claim as new and desire to secure by Letters Patent of the United States is V 1. In a machine of theLclass described, a.

movable fastening-pulling member, and gage members atthe opposite sides of the path of the pulling member and beyond which said pulling member is movable into engagement with the work, one of said gage members being farther removed than is the other from the point of engagement of the pulling member with the work.

2. In a tack-pulling machine, an. oscillatory tack-pulling tool arranged for presentation of the work in a substantially horizontal plane, and gage members situated at opposite sides of the path of oscillation of the tool, oneof said gage members having its work-engaging portion farther than the the work.

3. In a machine of the class described, a

5. In a tack-pulling machi-ne, a frame, an

oscillatory tack-pulling tool, a gage arm sit uated at one side of the tool and mounted on the frame for adjustmentinto different positions heightwise of the tool and a gage mem-' ber situated at the other side of the tool and mounted on the arm for adjustment relatively thereto.

*6. In a tack-pulling machine, a frame, a I tack-pulling tool mounted to oscillate thereon, a gage member variable in position upon the frame with respect to the tool, and a second gage member adjustably mounted upon that first mentioned.

7. In a tack-pulling machine, a frame, a

tack-pulling tool mounted to oscillate thereon, a gage arm variable in position'upojn the frame,'agage roll rotatable upon the arm, and a gage member adjustably mounted upon the arm and extending upon the opposite side of the tool from the roll.

8. In a'tack-pulling machine, a frame, an oscillatory tack-pulling tool, a gage member located adjacent to the tool and mounted upon the frame for movement into position to act asa guide for work presented to the tool, and a second gage member located adj acent to the tool and mounted on the frame for movement relatively to the tool and to the first-mentioned gage member into position to limit theextent'to which the work may approach the-tool.

9. In a tack-pulling machine, aframe, an oscillatory tack-pulling tool, and gage members located uponopposite sides of the path of movement of the tool and mounted upon the frame for adjustment relatively to each other and the tool into positionsin which one of the gage members is farther removed than the other from the point of engagement of the tool with the work presented to thetool to act as a stop for determining the depth of engagement. l

10. In a tack-pulling machine, a frame,a n' oscillatory tack-pulling toolmounted upon the frame, and gage members situated upon opposite sides of the tool and variable in position relatively to the tool and to each other. 1 1 v 11. In a tack-pulling machine, a frame, a tack-pulling tool mounted to oscillate thereupon, a gage member mounted upon the frame and variable in position with respect to the tool, and a second gage member mounted upon the frame and variable in position with respect to the tool and to the first-mentioned gage member independently thereof. e

12. In a tack-pulling machine, a frame, a tack puller bar located within the frame, the frame havingbearing surfaces against which one side of the bar is positioned, and removable bearing plates slidably mounted'in the frame for engaging the opposite side of the bar.

. 13. In a tack-pulling machine, a frame, a

tack puller bar located within the frame, and bearing plates for engaging one side of the tack puller bar having laterallyextending flanges for engaging portions of the frame rigidly to secure the plates in position.

14. In a tack-pulling machine, a frame,'a

. tack puller bar located within the frame, a

bearing plate for engaging one side of the tack puller barand having a-flange, anda guide member located on the frame forengaging the flange to secure the plate in position.

15. In attack-pulling machine, an openended arm, a plateclosing the greater portion of the openend of the arm, said'plate having an opening, and an oscillating lever located within the arm andhaving a curved end portion extending through the opening in the plate.

16. In a tack-pulling machine, a hollow open-ended arm, a projection upon the arm closing a portion of the opening at the end thereof, an oscillatory lever located within the arm andhaving an end portion extending through the opening, and a tack-pulling tool mounted upon the end of the lever outside of the arm, said end portion of thelever being curved on opposite sides of the projection to prevent tacks engaged by the tool fromentering the arm. V

In testimony whereof I'have signed my name to this specification. i

FRED -L. MACKEN IE; 

